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Question
All the words that can be formed using alphabets A, H, L, U and R are written as in a dictionary (no alphabet is repeated). Rank of the word RAHUL is ______.
Options
71
72
73
74
MCQ
Fill in the Blanks
Solution
All the words that can be formed using alphabets A, H, L, U and R are written as in a dictionary (no alphabet is repeated). Rank of the word RAHUL is 74.
Explanation:
No. of words starting with A are 4 ! = 24
No. of words starting with H are 4 ! = 24
No. of words starting with L are 4 ! = 24
These account for 72 words
Next word is RAHLU and the 74th word RAHUL
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Permutations - Permutations When Repetitions Are Allowed
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